Gosh, thank you, Giff Me Dat Fill-em! I like the name, Italian Ice Cream Man.
But be warned that I may come crying for help from everyone.
Let me assure you that I don't cross-reference. Not only would it take away the fun, but I'm not Internet-savvy enough for that! I use the low-tech method of enlarging the photos and staring at them.
I ignore hair color (and, as you learned, apparently I also ignore skin color &/or race) and style, plus other extraneous features. With Donna Reed, I used the two clues you gave from her show. I haven't seen "From Here To Eternity" nor "It's a Wonderful Life," in fact, but I knew she was in them.
The photo on top left is Donna Douglas. I was thinking the top right could be Yvonne DeCarlo, but she is not living, so I'll need to think some more. The bottom photos show Valerie Harper. Now tell me how wrong I am.